h2 {
    text-align: center;
}

.people_list {
    width: 400px;
    margin: 40px auto;
    padding: 20px;
    border: 1px solid #eee;
    background-color: bisque;
    li {
        height: 50px;
        line-height: 50px;
        .form_input {
            width: 300px;
            height: 28px;
        }
    }

    .sumbit {
        width: 100px;
        height: 30px;
        float: right;
        margin-right: 50px;
        margin-top: 120px;
    }
}